Definition
A firewall is a security system designed to monitor and control incoming and outgoing network traffic based on predetermined security rules. It can be implemented as hardware, software, or a combination of both and serves as a barrier between a trusted internal network and untrusted external networks.
Function
The main function of a firewall is to protect a network by filtering traffic to prevent unauthorized access, data breaches, and cyberattacks. It does this by allowing or blocking data packets based on specific security criteria, thus helping to maintain the integrity of a network, safeguard sensitive information, and ensure compliance with security policies. Firewalls can also log traffic data, which provides insights for network management and security auditing.
Related Terms
- Malware: Malicious software designed to harm or exploit any programmable device, service, or network, which firewalls help to prevent.
- DDoS Protection: A security measure to safeguard against Distributed Denial of Service attacks, often implemented alongside firewalls.
- SSL Certificate: A digital certificate that provides authentication for a website and enables an encrypted connection, reinforcing the security that firewalls offer.
Here is the Wikipedia Article
Reading Suggestions
- Understanding Analytics: This article discusses the importance of understanding website analytics, which can help you identify security issues such as unauthorized access, potentially related to firewall concerns.
- Crisis Management Plan: This resource explores how to prepare for and respond to crises, including potential security breaches that could be mitigated with a solid firewall and security strategy.
